There are times when truncating task titles makes sense. But for us at least, it's much more common that we'd want the full task title.
An example I'm working on now is attached. Those tasks are what we're working on, and we wanted a reference list for a client call. Now I have to hover over each one to get the full title, while on the call.
So at the least I'd love some sort of option that lets me show the full task title. But really I'd vote for the opposite — an option to truncate, or only truncate in certain rare situations (super long task titles? only when viewed from the inbox?).